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Wed, 12 Jan 2022 11:32:25 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 46WADkm83mE/FQAAMHmgww (envelope-from ); Wed, 12 Jan 2022 11:32:25 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 50d4f2f1-739b-11ec-9c70-5536b2d1e4e1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1641987145; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=eMvdzorta42Ya0fr9SWXzplMPwcOKwBhZz6kh21VkQU=; b=b9Xw1tC0hijT0OlGyuWRQGsdVRHpSmvt6PPLqckJFshju5KPF2bVKw4LA54ZAMTPLIpRdL /x57MBscChsIL4+j4+/2KAodD9W4gNOX/pR20fL1XKAnbgzxqe8kKqtg5MkmoRJxCJNq0k 7xtjhkBoWEsnpNz2plfm+rNbss3n4eA= Subject: Re: [PATCH v2 10/12] mini-os: add struct file_ops for file type socket To: Andrew Cooper , minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Cc: samuel.thibault@ens-lyon.org, wl@xen.org References: <20220111151215.22955-1-jgross@suse.com> <20220111151215.22955-11-jgross@suse.com> <659743cb-abc9-31b5-d6b2-0a21aa76bbb4@srcf.net> From: Juergen Gross Message-ID: Date: Wed, 12 Jan 2022 12:32:24 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <659743cb-abc9-31b5-d6b2-0a21aa76bbb4@srcf.net> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="GcR583zDw8ysJBNlY1wNTSt8p40QHj58M" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --GcR583zDw8ysJBNlY1wNTSt8p40QHj58M Content-Type: multipart/mixed; boundary="rxS368b4vpEaeEMrVpCx481MrTpmO0jXa"; protected-headers="v1" From: Juergen Gross To: Andrew Cooper , minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Cc: samuel.thibault@ens-lyon.org, wl@xen.org Message-ID: Subject: Re: [PATCH v2 10/12] mini-os: add struct file_ops for file type socket References: <20220111151215.22955-1-jgross@suse.com> <20220111151215.22955-11-jgross@suse.com> <659743cb-abc9-31b5-d6b2-0a21aa76bbb4@srcf.net> In-Reply-To: <659743cb-abc9-31b5-d6b2-0a21aa76bbb4@srcf.net> --rxS368b4vpEaeEMrVpCx481MrTpmO0jXa Content-Type: multipart/mixed; boundary="------------A1FDA99D8985E049B4B30829" Content-Language: en-US This is a multi-part message in MIME format. --------------A1FDA99D8985E049B4B30829 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 12.01.22 12:28, Andrew Cooper wrote: > On 11/01/2022 15:12, Juergen Gross wrote: >> diff --git a/lib/sys.c b/lib/sys.c >> index 3a8aa68..12deaed 100644 >> --- a/lib/sys.c >> +++ b/lib/sys.c >> @@ -99,11 +99,70 @@ static struct file_ops file_ops_none =3D { >> .name =3D "none", >> }; >> =20 >> +#ifdef HAVE_LWIP >> +static int socket_read(int fd, void *buf, size_t nbytes) >> +{ >> + return lwip_read(fd, buf, nbytes); >> +} >> + >> +static int socket_write(int fd, const void *buf, size_t nbytes) >> +{ >> + return lwip_write(fd, (void *)buf, nbytes); >> +} >> + >> +static int close_socket_fd(int fd) >> +{ >> + struct file *file =3D get_file_from_fd(fd); >> + >> + return lwip_close(file->fd); >> +} >=20 > Actually, on further thoughts... >=20 >> +static struct file_ops socket_ops =3D { >> + .name =3D "socket", >> + .read =3D socket_read, >> + .write =3D socket_write, >> + .close =3D close_socket_fd, >> + .fstat =3D socket_fstat, >> + .fcntl =3D socket_fcntl, >> +}; >=20 > read, write and close should dispatch directly to lwip_* and not bounce= > through a no-op local function. Not with changing the first parameter to struct file *. BTW, this patch had a bug, as the calls need to use file->fd instead of fd. 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